Dimensionless quantities, or quantities of dimension one, are quantities implicitly defined in a manner that prevents their aggregation into units of measurement...
22 KB (2,320 words) - 05:27, 30 July 2024
milliliter (mL/mL). The number one is recognized as a dimensionless base quantity. Radians serve as dimensionless units for angular measurements, derived from...
14 KB (2,386 words) - 21:29, 25 June 2024
Dimensional analysis (redirect from Quantity equation)
which is itself dimensionless. Therefore, multiplying by that conversion factor does not change the dimensions of a physical quantity. There are also...
96 KB (11,890 words) - 17:19, 9 July 2024
well-known dimensionless quantities illustrating their variety of forms and applications. The tables also include pure numbers, dimensionless ratios, or...
42 KB (780 words) - 10:11, 17 June 2024
systems of units). The angular quantities, plane angle and solid angle, are defined as derived dimensionless quantities in the SI. For some relations,...
18 KB (1,612 words) - 23:18, 7 August 2024
Such a quantity can be regarded as a derived quantity in the form of the ratio of two quantities of the same dimension. The named dimensionless units "radian"...
10 KB (1,105 words) - 22:46, 9 July 2024
Parts-per notation (category Dimensionless numbers)
values of miscellaneous dimensionless quantities, e.g. mole fraction or mass fraction. Since these fractions are quantity-per-quantity measures, they are pure...
27 KB (2,393 words) - 01:18, 18 May 2024
Volume fraction (category Dimensionless quantities of chemistry)
vol%) is one way of expressing the composition of a mixture with a dimensionless quantity; mass fraction (percentage by weight, wt%) and mole fraction (percentage...
4 KB (640 words) - 17:33, 14 December 2023
common symbols for the quantities, and the given dimensionless number is the ratio of the left column quantity over top row quantity; e.g. Re = inertial...
26 KB (811 words) - 19:28, 28 December 2023
Reynolds number (category Dimensionless numbers)
In fluid dynamics, the Reynolds number (Re) is a dimensionless quantity that helps predict fluid flow patterns in different situations by measuring the...
50 KB (6,365 words) - 06:37, 15 August 2024
Mach number (category Dimensionless numbers of fluid mechanics)
number (M or Ma), often only Mach, (/mɑːk/; German: [max]) is a dimensionless quantity in fluid dynamics representing the ratio of flow velocity past a...
23 KB (2,756 words) - 12:59, 6 July 2024
in a one-mole sample equals the Avogadro number (symbol N0), a dimensionless quantity. Historically, N0 approximates the number of nucleons (protons or...
26 KB (3,294 words) - 18:01, 3 August 2024
The deviation from the ideal gas behavior can be described by a dimensionless quantity, the compressibility factor, Z. The ideal gas model has been explored...
24 KB (3,856 words) - 18:53, 22 May 2024
Mole fraction (category Dimensionless quantities of chemistry)
recommended.) It is a dimensionless quantity with dimension of N / N {\displaystyle {\mathsf {N}}/{\mathsf {N}}} and dimensionless unit of moles per mole...
10 KB (1,839 words) - 00:48, 21 July 2024
across different systems of units, it is sometimes replaced by the dimensionless quantity "relative density" or "specific gravity", i.e. the ratio of the...
35 KB (3,297 words) - 17:44, 8 August 2024
G-factor (physics) (redirect from Dimensionless magnetic moment)
A g-factor (also called g value) is a dimensionless quantity that characterizes the magnetic moment and angular momentum of an atom, a particle or the...
12 KB (1,533 words) - 03:17, 12 August 2024
Molar mass (section Related quantities)
is dimensionally correct: standard relative atomic masses are dimensionless quantities (i.e., pure numbers) whereas molar masses have units (in this case...
19 KB (2,791 words) - 11:13, 27 July 2024
dimensional quantities are normalized against like-dimensioned quantities (called nondimensionalization), resulting in only dimensionless quantities remaining...
21 KB (2,600 words) - 18:36, 3 June 2024
Turn (angle) (redirect from Rotation (quantity))
"number of revolutions" or "number of cycles") is formalized as a dimensionless quantity called rotation, defined as the ratio of a given angle and a full...
49 KB (3,759 words) - 21:16, 15 August 2024
Frequency (section Related quantities)
also be expressed as radians per sampling interval, which is a dimensionless quantity. Angular frequency is frequency multiplied by 2π. Spatial frequency...
21 KB (2,290 words) - 11:44, 15 July 2024
the nation as a whole. The debt-to-GDP ratio is technically not a dimensionless quantity, but a unit of time, being equal to the amount of years over which...
15 KB (1,746 words) - 01:07, 26 June 2024
Mass fraction (chemistry) (category Dimensionless quantities of chemistry)
(mass/volume). This is incorrect because the unit "%" can only be used for dimensionless quantities. Instead, the concentration should simply be given in units of...
5 KB (835 words) - 15:32, 30 May 2024
metrology) for ratio is the dimensionless quotient between two physical quantities measured with the same unit. A quotient of two quantities that are measured with...
24 KB (3,682 words) - 05:20, 12 July 2024
quantity and its reference value, though a logarithm may be considered to be a dimensionless quantity. The reference values for each type of quantity...
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Base unit of measurement (redirect from Fundamental quantity)
as a quantity with dimensions or simply to define it as unity or a fixed dimensionless number, and reduce the number of explicit base quantities by one...
10 KB (1,210 words) - 10:56, 18 July 2024
the transverse or lateral direction. It is a dimensionless quantity, as it is a ratio between two quantities of the same dimension. Poisson's Ratio defines...
2 KB (203 words) - 10:55, 25 February 2020
the power number, which is the dimensionless description of the stirrer. Note that the two dimensionless quantities are not unique and depend on which...
33 KB (5,488 words) - 10:49, 30 June 2024
The term humidex was coined in 1965. The humidex is a nominally dimensionless quantity (though generally recognized by the public as equivalent to the...
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result in a dimensionless quantity, also known as ratio or simply as a rate (such as tax rates) or counts (such as literacy rate). Dimensionless rates can...
8 KB (1,235 words) - 15:32, 12 November 2023
Electromagnetism (section Quantities and units)
electric current is a fundamental quantity defined via Ampère's law and takes the permeability as a dimensionless quantity (relative permeability) whose value...
34 KB (3,877 words) - 22:30, 30 July 2024